Actually I ended up springing for the cs300.

I wanted something I could use easily for cycling AND running (and swimming if I really wanted to), and the CS300 is capable of detecting cadence. In my mind, the cost to get a new computer that measures cadence and then get a HRM was not significantly less than getting this model. And the 300 is only a little more $ than the 200.

And down the road, I'd love to get a tri bike, and with this watch you can easily move back and forth among bikes.

My only complaint so far is that it's BIG on the wrist, but I knew it would be. That'll be important when cycling so I can read it mounted on the handlebars.